Magnetic Domain Evolution of Terfenol-D with the VFM

MFM phase images of the Terfenol-D disk under a series of in-plane VFM fields perpendicular to the Magnetization. (a) MFM phase images taken at 2000 G and (b) after its removal; (c) MFM phase images taken at -2000 G and (d) after its removal. The direction of the magnetic field is indicated by the arrow. Imaged with MFP-3D AFM, 10 µm scan. Image courtesy of Shuhong Xie, Xiangtan University, China and JiangYu Li, University of Washington.